Anti-tripping type sealing drill pipe internal thread structure
An internal thread, sealing technology, applied in drill pipe, drill pipe, drilling equipment and other directions, can solve the problems of unstable external thread connection, affecting the use effect, unreasonable design, etc., to improve the overall stability and improve the use effect. , Reasonable design effect
Pending Publication Date: 2020-09-08
澳普洛钻探工具(无锡)有限公司
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Problems solved by technology
[0003] The internal thread of the sealing drill pipe is its important structure, and the CNC lathe is used to cooperate with the corresponding tool to realize its production and processing. Due to the unreasonable design of the internal thread of the sealing drill pipe in the prior art, it is easy to cause conflicts with the external thread during use. The connection is unstable and falls off, which affects the use effect
In particular, it cannot be applied to the geology of the upper part of the core sampling body
Method used
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Embodiment Construction
[0012] The present invention will be described in further detail below in conjunction with examples and specific implementation methods.
[0013] like figure 1 , 2 As shown, the internal thread structure of the anti-trip type airtight drill pipe includes a barb-shaped internal thread body 1, and the two ends of the internal thread body 1 are respectively the end face sealing surface 2 and the bottom surface sealing surface 3, and the internal thread body 1 The thread pitch is 8.47mm, thread depth 13 is 0.80±0.05mm, thread taper 14 is 1°30', thread effective length 11 is 35.0±0.2mm (not including end face sealing surface 2 and bottom surface sealing surface 3), internal thread The thread top outer diameter 15 at the end of the body is 83.5mm, the thread top outer diameter 16 at the bottom of the internal thread body is 81.5mm, the thread top chamfer outer diameter 17 at the end of the internal thread body is 83.8mm, and the internal thread contact surface clamp The angle 18 i...
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Abstract
The invention provides an anti-tripping type sealing drill pipe internal thread structure. The anti-tripping type sealing drill pipe internal thread structure comprises an internal thread body with abarbed thread. An end surface sealing surface and a bottom sealing surface are separately arranged at two ends of the internal thread body, the thread pitch of the internal thread body is 8.47mm, thethread depth is 0.80+ / -0.05mm, the thread taper is 1 degree and 30', the effective thread length is 35.0+ / -0.2mm, and the total thread length is 42.0+ / -0.2mm. The anti-tripping type sealing drill pipeinternal thread structure has the advantages that the design is reasonable, arc sealing part is designed at the tail end of an internal thread, matched with a taper sealing surface, the sealing performance of an external thread drill pipe can be effectively improved, the anti-tripping performance of the drill pipe can be effectively improved through the barbed thread design, the stability of theconnection with an external thread is improved, the overall stability of the sealing drill pipe is improved, and the use effect is improved. The overall structure and size design is suitable for the upper end of a core sampling body.
Description
technical field [0001] The invention relates to an anti-tripping type sealing internal thread structure of a drill pipe. Background technique [0002] Sealed drill pipe, as an important part of drilling tools, is used for geological exploration, mainly including geological exploration and detection, determining the appropriate bearing layer, determining the foundation type according to the bearing capacity of the bearing layer, and calculating Basic parameters. Mineral deposits with industrial significance can be found in the general survey of minerals. In order to find out the quality and quantity of minerals, as well as the technical conditions for mining and utilization, provide mineral reserves and geological data required for mine construction design, and analyze rocks and strata in a certain area Conduct investigation and research work on geological conditions such as geology, structure, mineral resources, hydrology, and landforms. [0003] The internal thread of the...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B17/042
CPCE21B17/042
Inventor 方坤顾光辉
Owner 澳普洛钻探工具(无锡)有限公司